OS X: Growl, the popular notification software, just hit version 2.0. This major update brings true support for Notification Center, plus the ability to push notifications to your mobile via Prowl or Boxcar. »9/20/12 4:30am 9/20/12 4:30am

Mac OS X only: Boxcar is one of the essential iOS apps, as it can notify you about far more than just a new SMS. Boxcar for Mac, just out in beta, does the same thing for your desktop, pinging in for new Google Voice, Twitter replies or DMs, Reddit posts, Github committs—just about anything, really. »3/31/11 1:00pm 3/31/11 1:00pm